Efetue as seguintes subtrações:
a)5+1/2=
b)7+2/3=
c)3/7+4=
d)2/5+1=
e)10/3-1=
f)7/2-1=
g)3-2/5=
h)7-3/4=
Soluções para a tarefa
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a) 5 + 1/2 = 10 + 1/2 = 11/2
b) 7 + 2/3 = 21 + 2/3 = 23/3
c) 3/7 + 4 = 3 + 28/7 = 31/7
d) 2/5 + 1 = 2 + 5/5 = 7/5
e) 10/3 - 1 = 10 - 3/3 = 7/3
f) 7/2 - 1 = 7 - 2/2 = 5/2
g) 3 - 2/5 = 15 - 2/5 = 13/5
h) 7 - 3/4 = 28 - 3/4 = 25/4
b) 7 + 2/3 = 21 + 2/3 = 23/3
c) 3/7 + 4 = 3 + 28/7 = 31/7
d) 2/5 + 1 = 2 + 5/5 = 7/5
e) 10/3 - 1 = 10 - 3/3 = 7/3
f) 7/2 - 1 = 7 - 2/2 = 5/2
g) 3 - 2/5 = 15 - 2/5 = 13/5
h) 7 - 3/4 = 28 - 3/4 = 25/4
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